Sir Ranulph Fiennes has climbed the Eiger and Mount Everest. He's crossed both Poles on foot. He's been a member of the SAS and fought a bloody guerrilla war in Oman. And yet he confesses that his fear of heights is so great that he'd rather send his wife up a ladder to clean the gutters than do it himself. With an enthralling combination of story-telling, research and personal accounts of his own struggles to overcome fear, Sir Ranulph Fiennes sheds new light on one of humanity's strongest emotions.